GB T 12224

ICS 23.060.30 J 16 荡鸿 中 华 人 民 共 和 国 国 家 标 准 GB/T 12224-2005 代替 GB/T 12224-1989 钢制阀门 一般要求 General requirements for industrial steel valves 2005-09-19发布 2006-04-01实施 中华人民共和国国家质量监督检验检疫总局 .* 中 国 国 家 标 准 化 管 理 委 员 会 44 'f17 GB/T 12224-2005 目 次 前言 ···············································，，，。·······。··，·，··，，，，··········，·······························⋯⋯ 皿 1 范围 ·············································。·。·······，，，·······，，，，，，····································⋯⋯ 1 2 性引用文件 ···，，，，，，，······，·····，··，··，··················································.·.·.·......⋯⋯ 1 3 压力一温度额定值·····。。·····，·，，，··············································································⋯⋯ 3 3.1 概述 ·······。。。····，··。··，，，，，，·，··············································································⋯⋯，3 3.2 额定温度 ·，·，，，，，，·，···················，·，·，··································································⋯⋯ 3 3. 3 温度影响 ，······，·，························································································⋯⋯。3 3.4 法兰连接端阀门使用要求，，················，，，·，······························............................⋯⋯ 12 3. 5 偏差·························································································，·，，·。·········，···，，一 12 3. 6 多种材料等级 ····················································································..⋯⋯ ，，，，，.，12 3. 7 局部运行条件····················································································⋯⋯ ，，，，，，，12 4 标 志································································································，·。········，，，，，，12 5 材料 ·，·····，·······，······························································································，，，，，，13 5. 1 概述·····································································································，·，···。··一 13 5.2 材料选择···············································································，·，，，，·，···············一 13 5. 3 防静电要求····································································。·。········。一，，，，，..........·，，一13 6 要求··································································，·，。。···········，，，·····，，，，·，·······⋯⋯ 13 6.1 阀体设计··································································，，。。。，·。··。·。·····，·，······，··，，，···⋯⋯ 13 6.2 端部尺寸····································································。，·。···，。，··，，，，，，·，·，，·······，··⋯⋯ 17 6. 3 辅助连接件········································································，·，，，，。····一 ，。.，，.，，..⋯，⋯ 18 6.4 阀门组件······································，，··············，，，······，···································⋯⋯ 20 6.5 阀杆············································，，，，·，·········。。。，。，，··········································⋯⋯ 22 6.6 安装限制·······································。·。···········，·，，，，··················，····················⋯⋯ 22 6. 7 对夹式阀门·······························。·。。···。·····，，，，，，，，······，，····················.··.............⋯⋯ 22 7 检验与试验·································，···，。·。，·····。·。。·。，，，，，，············，······························⋯⋯ 22 7. 1 检验·······················································。·。。·。···············································⋯⋯ 22 7.2 压力试验 ，······，，，，，·········，··，，····，·，······························································...⋯⋯ 23 S 缺陷清除及修复···。。。··，，，，，，，，··············，·，·，··························································⋯⋯ 24 8.1 缺陷清除·····。·。。。。。·。·，，，，·，·······，················，························································⋯⋯ 24 8.2 补焊修复··。。·。·。··，··，·，，，，，，，，，，，，，，，，·····································································⋯⋯ 24 附录A(资料性附录) 阀门公称尺寸和阀体端部基本内径的关系 ····································⋯⋯ 25 附录B(资料性附录) 压力一温度额定值的确定方法 ······················································一 26 B. 1 概述 ·······，，·，·······························································································一 ，26 B. 2 压力级额定值的确定方法 ···························································.......⋯⋯ 26 B. 3 特殊压力级额定值的确定方法 ···················································.·................⋯⋯ 27 附录C(规范性附录) 阀门的无损检验要求 ·······························································⋯⋯ 28 C. 1 范围 ，，，，，，，··，··，····，，，，，，，·················································································⋯⋯ 28 C. 2 概述 ···················································································。··。·。。。，·，··，，，，，··，，，，一 28 T ca/T 12224-2005 C. 3 规定的检查 ··········································································。。，···。··········，，一 28 附录D(规范性附录) 特殊压力级阀门压力一温度额定值·，，，。。···。，·，，，，，，，，··，··，····，，·············⋯⋯ 33 图1 阀体颈部 ····················································································，，·。一 ，。，，，..⋯ 15 图2 蝶阀阀体 ························································································。···。·。⋯ ，二17 图3 焊接端坡口 ································································································一 18 图4 辅助连接的螺纹长度 ···················································································⋯⋯ 19 图5 辅助连接用凸台 ···········································································。···。··。⋯⋯，，。。.19 图6 辅助连接的承插焊 ················································································⋯ ⋯ 19 图7 辅助连接的对焊 ·····················································································⋯⋯ 20 图8辅助连接位置的表示方法 ····················································.........................⋯⋯21 图C 1闸阀阀体(自密封阀盖)·····························································.··..·...........⋯⋯29 图C2 Y型截止阀阀体(自密封阀盖)，·，，，，·······························································⋯⋯ 29 图C. 3 角阀阀体(自密封阀盖)·················································......⋯⋯，..............⋯⋯ 30 图C. 4下弯阀体(自密封阀盖)····································································.........⋯⋯30 图C. 5 闸阀阀体(法兰连接的阀盖)···················，····································...............⋯⋯30 图C. 6 截止阀阀体(法兰连接的阀盖)，，，，，··，··········，，·················································⋯⋯ 31 图C. 7 蝶阀阀体 ·.....................,....-........................................................................ 31 图C. 8 旋塞阀阀体 ······························，·，···。········，，，，··，，，······，·，·，·······················..⋯⋯ 31 图C. 9管道闸阀阀体(自密封阀盖)····，·，·，，·，，，，，，···········，······················....................⋯⋯32 图 C. 10 蝶形阀盖 ·························。。，。·。，··。。·····。·。。。。·····，···，，，，······，····，，，······················⋯⋯ 32 图C.11 盖板··········································，，，···，··············，，，，，，····，·························⋯⋯ 32 表1 钢制阀门承压件材料················································，，。··⋯，一 ，，，，，，，二，，，.，二，，，.....⋯ ⋯ 2 表2-1至表2-12标准压力级阀门压力一温度额定值 ··································..·..⋯⋯ ，.，，⋯4 表3 壳体最小壁厚fm ................................................?..。一，，，，，二，，，................·.......⋯⋯ 14 表4 焊接端部尺寸 ···························································。···。，··。。····，，，·，，··，·，·，·······一 18 表5辅助连接壳体螺纹有效长度 ···············································4一 ，，，，⋯，，，，，，......⋯⋯ 19 表6辅助连接壳体承插焊接有关尺寸 ··············································，⋯ ⋯~‘一 ，，⋯，，.，⋯19 表7 辅助连接凸合的外接圆直径 ························································.... .....⋯⋯ 20 表8 辅助连接件规格 ························································································⋯ ⋯20 表9 阀门壳体试验持续时间 ·······················································⋯⋯ ，.，，，⋯，，⋯⋯23 表10 0. 6 MPa气体进行密封试验的阀门··················································.·......⋯⋯ 23 表11阀门密封试验持续时间··································································.·..·.....⋯ ⋯23 表A.1 阀门公称尺寸和阀体端部基本内径的关系 ······················································⋯⋯ 25 表D. 1至表D. 12特殊压力级阀门压力一温度额定值······················································⋯⋯ 33 GB/T 12224-2005 目p 言 本标准与ASME B16. 34a-1998《法兰、螺纹和焊接端连接的阀门》的一致性程度为非等效.主要差 异如下: — 本标准取消了ASME B16. 34a-1998中7,3渗漏探测装置的内容。 — 本标准取消了ASME B16. 34a-1998中附录B射线照相规程和验收标准的内容。 — 本标准取消了ASME B16. 34a-1998中附录C磁粉检验规程和验收标准的内容。 一一本标准取消了ASME B16. 34a-1998中附录D液体渗透检验规程和验收标准的内容 — 本标准取消了ASME B16. 34a-1998中附录E超声波检验规程和验收标准的内容。 — 本标准取消了ASME B16. 34a-1998中附录G限定压力级阀门要求的内容。 — 本标准取消了ASME B16. 34a-1998中附录H质里体系程序的内容。 — 本标准取消了ASME B16. 34a-1998中附录I参照标准和技术条件的内容。 — 本标准对ASME B16. 34a-1998中附录F确定压力一温度额定值方法的内容作了适当精简。 — 本标准把ASME B16. 34a-1998中条款8特殊压力级阀门规定检验的内容放在附录C中。 本标准代替GB/T 12224---1989((钢制阀门 一般要求》。 本标准与GB/T 12224-1989相比主要变化如下: — 标准格式按 GB/T 1. 1-2000《标准化工作导则 第 1部分:标准的结构和编写规则》作了 调整 ; — 适用范围由“公称压力PN 16 ^-320”修改为“公称压力PN16-V PN760气 — 在设计要求部分的端部尺寸内容增加了承插焊接端和螺纹连接端; — 本标准中“压力一温度额定值”的制定方法及不同材料的压力一温度额定值按本标准表2-1至 表2-12和GB/T 9124-2000((钢制管法兰 技术条件》的规定; — 对GB/T 12224-1989材料部分的4,4"精密铸造件不得用于公称压力PN> 100的阀门”的规 定作了相应修改; — 对GB/T 12224-1989材料部分的4.5和4.6按ASME 16.34:1998的规定作了相应修改; — ，在设计要求部分增加了阀门组件、安装限制、对夹式阀门3部分; — 增加了标准压力级阀门压力一温度额定值: 增加了阀门的检验与试验部分; 增加了缺陷清除与修复部分; — 增加了附录A管道公称尺寸和内径的关系; — 增加了附录B压力一温度额定值的确定方法; — 增加了附录C阀门的无损检验要求; — 增加了附录D特殊压力级阀门压力一温度额定值; 本标准技术内容与ASME B16. 34a--1998基本一致，技术水平与之相当 本标准附录A和附录B为资料性附录，附录C和附录D为规范性附录。 本标准由中国机械工业联合会提出。 本标准由全国阀门标准化技术委员会((SAC/TC188)归口。 本标准主要起草单位:合肥通用机械研究院、中核苏阀科技实业股份有限公司、沈阳盛世高中压阀 m GB/T 12224-2005 门有限公司、上海市通用机械技术研究所、上海良工阀门厂、浙江五洲阀门制造有限公司、武汉锅炉集团 阀门有限公司、上海亚核阀业成套有限公司。 本标准主要起草人:高秉申、陈鉴平、郑云海、孔彪龙、杨恒、郑祖辉、吕召政、杨志聪。 本标准所代替标准历次版本发布情况为: — GB/T 12224-1989 GB/T 12224- 2005 钢制阀门 一般要求 范围 本标准规定了钢制阀门的压力一温度额定值、材料、设计要求、检验与试验、标志和无损检验与修复 等内容 。 本标准适用于表1给出的各种材料，阀体可以是铸造、锻造和组焊加工，端部连接可以是法兰、螺 纹和焊接端连接，以及对夹式和单法兰安装的阀门。 本标准适用阀门的参数范围为: a) 公称压力PN16--PN760的阀门，公称压力PN760仅适用于焊接端阀门; b) 公称尺寸不大于DN125。的法兰连接端阀门和对焊连接端阀门; c) 公称尺寸不大于DN65的承插焊接端阀门和螺纹连接端阀门; d) 额定温度不大于5400C、公称压力不大于PN420的螺纹连接端阀门; e) 公称压力PN16-PN25的法兰连接端阀门，额定温度不大于540-C. 2 规范性引用文件 下列文件中的条款通过本标准的引用而成为本标准的条款。凡是注明日期的引用文件，其随后所 有的修改单(不包括勘误的内容)或修订版均不适用于本标准，然而，鼓励根据本标准达成的各方研 究是否可使用这些文件的最新版本。凡是不注日期的引用文件，其最新版本适用于本标准。 GB 150-1998 钢制压力容器 GB/T 193-2003 普通螺纹 直径与螺距系列(ISO 261:1998, MOD) GB/T 197-2003 普通螺纹 公差(ISO 965-1:1998, MOD) (;B/T 228-2002 金属材料 室温拉伸试验方法(eqv ISO 6892:1998) GB/T 711-1988 优质碳素结构钢热轧厚钢板和宽钢带(neq IOCT 1577) GB/T 1047-2005管道元件 DN(公称尺寸)的定义和选用(ISO 6708:1995,IDT) GB/T 1048-2005 管道元件 PN(公称压力)的定义和选用(ISO/CD 7268:1996,IDT) GB 3531-1996 低温压力容器用低合金钢钢板 GB/T 4237-1992 不锈钢热轧钢板 (neq JIS G4304:1984) GB 6654-1996 压力容器用钢板 GB/T 7306-2000 550密封管螺纹 (eqv ISO 7-1;1994) GB/T 9113一9123-2000 钢制管法兰 GB/T 9124-2000 钢制管法兰 技术条件 GB/T 12220 通用阀门 标志(GB/T 12220-1989,idt ISO 5209:1977) GB/T 12221 金属阀门 结构长度(GB/T 12221---2005, ISO 5752;1982, MOD) GB/丁12228 通用阀门 碳素钢锻件技术条件 GB/T 1222， 通用阀门 碳素钢铸件技术条件 GB/T 1223。 通用阀门 奥氏体钢铸件技术条件 GB/T 12716-2002 600密封管螺纹(eqv ASME BI. 20.1:1992) GB/T 13927 通用阀门 压力试验(neq ISO 5208;1982) GB/T 14976-2002 流体输送用不锈钢无缝钢管 JB/T 1751-1992 阀门结构要素 承插焊连接和配管端部尺寸 GB/T 12224-2005 盅 少 把 埠 一 一 } 一 一 一 {:一二m心 一 :一 洲 r门 今〕 教 遥 鸳 口 薪 卜1 N 叔 r门 匕 U 户 翻 护 N 软 a ，穿 ‘宝 伊 1 报 葵 勿 ，d 亡口 一 ， 卜 m O 划 塞 一 一 一 一 一 { } 口 劲 之 亡口 ， 日 卜 U 〔〕 一{}令一鉴组m 00o { 荔 少 望 辑 一::〔一 } 叶卜 刁t勺卜m 〕:一:{卜必 { ‘代 公 N F 己 亡 二 七理 N 心闷 一 卜 、 国 曲 一 一 一 O 二 m口 4U'iF 一 aUl一 {U!三a一a一3}QNV U弓鑫M吸口 一 一 { Uk .U 墓 吵 艳 鉴 ::一 !i冬一含} !:}:一令{ 必卜 」卜喇国卜~~ 一 塞 Q 一 { C;一 自 z C 芝 巴勺 O I { O 荟 妇 U 明 尸 叫 }于一 O岑目 、 妇O- 一 〔了 z O: 沪.闷 卜 U O I:一一一o F摹鬓宫兰 一 IN air, ILd 捧 尸 尸 r、 卜 、 、 润 口 ，d I月 吧已 蟠 山 公 一 一 一 刘 ‘ 明 e户 公 润 0 ，朴 己母 “勺 口 勺 闰 心 一 尸曰 亡心 写 勺 (丫刁 闰 C7 ! 一 」示 ‘自 宙 啥‘ 国 U { ，十 U 临 门‘ 国 O I 一 一 亡、 r门 卜 」 ，徐 卜 、、 国 公 一 纂 a一 一 一圣 a 演 一 a 口 ，. 之 c 荟 口 二 C 一 一 x O 荟 卜 U 目 刁 甲.. 一)一 一 一 O 二之的，州 ‘U咬习 一0zU 」令:F F:0 0,襄轰宫邑 一 4}-- 3Frlq m3U3一 目 曰 芝 勺二 一 一e一 一 O 居 帅 O ‘ 曰 ， 目 :0‘U } M 一翼 IMu簇 箕 zrl a 吕 二 三 N 二 ? ? ? ? ? ??? ? ? ? ? GB/T 12224-2005 JB 4726-2000 压力容器用碳素钢和低合金钥锻件 JB 4727-200。 低温压力容器用碳素钢和低合金钢锻件 JB 4728--200。 压力容器用不锈钢锻件 JB/T 5263 电站阀门钢铸件 技术条件(neq ANSI/ASTM A217M) JB/T 6439 阀门受压铸钢件 磁粉探伤检验 JB/T 6440 阀门受压铸钢件 射线照相检验 JB/T 6902 阀门铸钢件 液体渗透检查方法 JB/T 6903 阀门锻钢件 超声波检查方法 JB/T 7248 阀门低温铸钢件 技术条件 JB/T 7927 阀门铸钢件 外观质量要求 3 压力一温度额定值 3.1 概述 3.1.1 压力一温度额定值 压力一温度额定值按表2的规定，除表2规定的以外按GB/T 9124-2000的规定。 3.1.2 标准压力级阀门 满足本标准要求的阀门，除满足附录C阀门的无损检验要求之外的阀门，都定为标准压力级阀门， 其压力一温度额定值按3.1.1的规定。 3.1.3 特殊压力级阀门 满足3.1.2要求的阀门，并且满足附录C阀门的无损检验要求，其压力一温度额定值按附录D中 表D. 1至表D.12的规定。特殊压力级额定值不适用于法兰连接端阀门。 3.1.4 中间额定值阀门 在公称压力等级数值内，处于表列额定温度之间或额定压力之间的中间额定值可以用线性插值法 确定。但对法兰连接端阀门，不允许用线性插值法确定公称压力。 3.1.5 组焊件 完全或部分用铸件、锻件、棒料、板材或管材组焊的阀门应满足下列要求: a) 焊件的组焊和热处理按GB 150--1998的规定; b) 焊缝的检验与验收按GB 150-1998的规定; 。) 上述要求不适用于密封焊或附着焊，如倒密封座、阀座圈、吊耳和辅助连接件的焊接。 3.1.6 最高允许工作压力 除3. 5规定外，压力一温度额定值是在所示温度下以表压所表示的最高允许工作压力。 3，2 额定温度 对应额定压力的温度就是该承压壳体的额定温度，这个温度与其内的介质温度相同。 3.3 温度影响 3.3.1 高温 在蠕变范围内的高温下，由于法兰、螺栓和垫片发生松弛将会导致螺栓负荷减小，因此会降低法兰 连接面的密封能力。在温度升高时。特别是公称压力PN镇25的法兰连接面可能会产生泄漏，所以应采 取有效措施避免过大的外加负荷或过大的温度梯度变化。 33.2 低温 对于表1中所列的材料，工作温度低于一29℃的压力值都应不大于GB/T 9124-2000温压表中对 应于(38℃的额定值。表1中所列的某些材料.在低温下的抗冲击性能会降低，所能承受的冲击载荷、 应力突然变化或高度应力集中的能力也会降低。 GB/T 12224-2005 3.3.3 介质热膨胀 在一定情况下，有些双阀座阀门能密封中腔。在中腔充满或部分充有介质，温度上升的情况下可能 导致中腔压力异常升高，造成阀门破坏。有可能发生这种情况的场合，用户应在定货合同中说明，制造 厂在阀门中腔应设置泄压装置。 第1.1组材料:WCB,A105长期使用于温度大于427℃时 钢中的碳化物相会转化为石墨 表2-1 标准压力级阀门压力一温度额定值 温度/ t 叫 一引40口一。一」]0。「___上_1160一 二。一63 loo 1so 32016 25 40 20 67 1土0 150 260 420 760 一29-38 1, 6 2, 0 2 5 4. 1 5. 2 6t5 7 0 9.6 10. 4 15. 6 16. 5 26.3 32. 7 43. 4 78. 1 93 1.4 1.8 2. :3 3, 7 4. 7 5. 9 6 3 8. 5 9. 5 14_2 15 0 23. 7 29. 7 39. 5 71. 1 13.9 14. 7 23.0 28. 8 38. 5 69. 2149 13 1. 6 2. 1 3.6 4. 6 5. 7 6.1 8.3 9. 3 204 l. 1 1. 4 19 3 4 4. 4 5. 6 6.0 8. 2 8. 9 13. 4 14. 2 22. 3 27. 8 37. 1 66. 8 260 1.0 1.2 1.7 3. 2 4.2 5.2 5.6 7.7 8.4 12. 6 13，3 21. 0 26，2 35，0 63, 1 315 0. 8 1. 0 1 4 2. 8一l3. 8 4.8 5. 1 7. 1 7. 7 71.5 12. 2 19. 3 24.0 32. 0 57. 7 343 0. 7 0，9 1, 3 2. 7 3 7 4 7 5_0 7. 0 7 5 11 3 12. 0 18. 9 23.5 31. 4 56. 6 371 0. 6 0.8 1. 2 2. 7 3. 7 4. 7 5.0 7.0 7.5 11. 2 11.8 18. 7 23. 3 31. 2 56.1 399 0,5 0. 7 1. 1 2. 6 3.5 4. 4 4. 7 6. 5 7. 1 10. 6 11. 2 17. 7 22. 1 29. 5 53. 1 427 0. 5 0. 6 1.0 2. 1 2.9 3.6 3.9 5，3 5，8 8，7 9. 2 14. 5 18. 1 24. 1 43. 3 454 0. 4 0. 5 0.7 :.:1.9 2. 3 2. 5 3. 4 3. 7 5. 7 6. 0 9.4 11. 7 15. 7 28. 2l, 2 1,5 1,6 2,2 2. 4 3. 6 3. 8 6. 0 7. 5 10.0 18.0482 0.3 0. 4 0. 5 510 0. 2 0.2 0.3 0. 5 0. 7 0. 9 1. 0 1.3 1.4 2. 2 之.3 3.6 4. 5 6.0 10.8 538 0, 1 0, 1 0. 1 0. 3 0. 4 0. 4 0. 5 0 6 0. 7 1. 1 1. 2 1.8 2. 2 3.0 5. 4 第1. 2组材料:WCC长期使用于温度大于427℃时，钢中的碳化物相会转化为石墨 LC2,LC3使用温度不大于3430C o 表 2一2 标准压力级 阀门压力一温度额定值 all/.c 公 称 压 力 一16一 25一40一 丽一可一100{一」1、一 320一100 160 3201.6 25 40 一「 63 20 50 I} 67 110 150 260 420 760 分级表示的上作压力/MP. 一 2，~ 38 1.6 2 0 2，5 4, 1 5 2 6 5 7 0 9 6 10. 5 15 吕 16. 7 26 3 32. 9 43.9 79. 1 93 1_4 1.8 2，3 4. 0 5. 2 6 5 :_: 9_6 10. 5 15. 8 16. 7 26. 3 32. 9 43.9 79. 1 9 4 10. 2 15. 3 16. 2 25 6 32, 0 42.7 76. 8149 1.3 1. 6 2.1 3.9 5，1 6 4 204 1.工 工.4 2.0 3.8 5.o 6，2 6，6 9，1 9，9 114. 915. 8 24. 8 30 9 41. 3 74. 4 260 1.n 1.2 1. 7 3.5 4. 7 5.8 6.2 8，5 9.3114,014, 8 23, 4 29. 2 39，0 70. 0 GB/T 12224-2005 裹 2-2(续 ) 温度/ ℃ 公 称 压 力 16 25 40 63 100 160 320 20 50 67 110 150 260 420 760 分级表示1的工作压力/MPa 315 0.8 l' O 1.5 3.2 4. 3 5.3 5. 6 7.8 8 5 12 5 13，5 21.2 26.5 35. 4 63. 7 343 0. 7 0. 9 1, 4 3.0 4. 1 5. 1 5.5 7.5 8. 2 12. 4 13, 1 20. 7 25. 8 34. 5 62.0 371 0. 6 0. 8 1 3 2 9 4. 0 5, 0 5.3 7. 3 8.0 12.0 12. 7 20. 0 24 9 33, 2 59.8 399 0.5 0. 7 1. 1 2. 6 3. 5 4. 4 4. 7 6. 5 7. 1 10. 6 11. 2 17. 7 22. 1 29. 5 53. 1 427 0. 5 0. 6 l' O 2. 1 2.， 3. 6 3.9 5.3 5.8 8- 7 92 14.5 18.1 24. 1 43. 3 454 0.4 0, 5 0.7 1.4 1. 9 2.3 2. 5 3.4 3. 7 5. 7 6.0 9. 4 11. 7 15. 7 28. 2 482 0. 3 0.4 0. 5 0.9 1. 2 1.5 1. 6 2, 2 2. 4 3. 6 3.8 6. 0 7,5 10.0 18. 0 510 0. 2 0.2 0.3 0. 5 0. 7 0. 9 1.0 1. 3 1.4 2，2 2.3 3. 6 4. 5 6.0 10.8 S38 0. 1 0. 1 0. 1 0 3 0. 4 0,4 0. 5 0. 6 0. 7 1. 1 1. 2 1. 8 2.2 3,0 6.4 第1.3组材料:LCB使用温度不大于3430C , 表2-3 标准压力级阀门压力一温度额定值 温度/ .C 公 称 压 力 16 25 40 63 100 160 320 20 50 67 110 150 260 420 760 分级表示的工作压力/MPa 一29--38 1 5 1. 9 2. 4 3.9 4, 9 6.1 6. 5 9. 0 9. 8 14. 6 15. 5 24. 4 30,5 40. 7 73. 2 93 1. 4 1. 7 2. 2 3.吕 4. 6 5. 7 6. 1 8.4 9. 2 13. 8 14. 7 23.I 28.8 38. 4 69. 2 149 1.3 1. 6 2.I 3. 7 4. 5 5. 6 6. 0 8.3 9. 0 13.5 14. 3 22.4 28. 0 37. 4 67. 2 204 1. 1 1.4 1. 9 3. 5 4, 3 5.4 5. 8 8.0 8. 7 13. 0 13. 8 21. 7 26. 8 36. 2 65.1 260 1.0 1.2 1. 7 3 3 4，1 5. 1 5.4 7. 5 8. 2 12. 2 12. 9 20 4 25. 8 34, 1 61. 4 315 0. 8 1.0 1.4 3. 0 3.8 4.7 弓 0 6. 9 7.5 11. 2 11. 9 18.7 23. 3 31. 2 56.1 343 0 7 0. 9 1. 3 2. 9 3，7 4. 6 4. 9 6. 7 7. 3 11.0 11. 6 18, 4 22, 9 30. 6 55. 1 371 0. 6 0.8 1.2 2 8 3‘6 4. 5 4 8 6 6 7.2 10. 9 11. 5 18. 2 22. 7 30.4 54. 6 399 0. 5 0. 7 1 ] 2. 5 3. 3 4. 2 4. 4 6.0 6.6 10.0 10. 6 16. 6 20. 7 27, 7 49. 9 427 0. 5 0, 6 0.9 2 1 2.7 3.3 3.6 5. 0 5. 5 8. 3 8, 8 13, 7 17, 1 22. 9 41. 2 454 0. 4 0. 5 0. 7 L5 19 2.3 2.5 3. 4 3. 7 5.7 6. 0 9.4 11.7 15, 7 Z8,2 第1.5组材料:WC1使用正火加回火的材料，推荐长期使用温度不大于4680C, I.Cl使用温度不大于3430C , GB/T 12224-2005 表 2-4 标准压 力级阀 门压力一温度额 定值 温度/ "C 公 称 压 力 16 25 40 63 loo 160 320 20 50 67 110 150 260 420 760 分级表示的工作压力/MP. 一29--38 1. 5 1. 9 2.4 3. 9 4. 9 6. 2 6. 6 9.0 9.8 14. 6 15.5 24, 4 30.5 40,7 73.2 93 1. 4 1.8 2.3 3.8 4.8 5.9 6. 3 8 7 9. 5 14. 3 15.1 23. 8 29.8 39. 8 71. 6 149 1.3 16 2. 1 3‘6 4.6 5. 7 6. 1 8.4 9. 2 13. 7 14. 5 22. 9 28. 6 38. 2 68.7 204 1. 1 1. 4 1. 9 3. 4 4. 5 5. 6 6.0 8.3 ，0 13.5 14. 3 22. 5 28. 1 37. 5 67. 4 260 1.0 1. 2 1. 7 3. 2 4. 3 5. 3 5 8 8.0 8. 7 13. 1 13. 9 21. 8 27. 2 36. 4 65. 5 315 0.合 1.0 1.5 3.1 4.2 5. 2 5.6 7.8 B.5 12.7 13.4 21_ 2 26，5 35.4 63.7 343 0, 7 0，9 1, 4 3. 0 4. 1 5.1 5.5 7. 5 8.2 12.4 13. 1 20. 7 25. B 34. 5 62. 0 371 0. 6 0.8 1. 3 2. 9 4.0 5.0 5. 3 7 3 8,0 12, 0 12.7 20. 0 24. 9 33. 2 59. 8 399 0，5 0. 7 1. 2 2.7 3. 7 4. 7 5.0 6. 9 7. 5 11. 2 11.8 18. 7 23.3 31. 1 56,0 427 0. 5 0.6 1. 1 2.5 3. 5 4. 4 4.7 6.5 7. 1 10.7 11. 3 17.8 22. 2 29. 7 53.5 454 0 4 0.5 0. 9 2. 4 3. 4 4.2 4. 5 6. 2 6.8 10.2 10.8 17.1 21. 3 28. 5 51.3 482 0, 3 0,3 0,7 2. 1 3 1 3. 9 4.2 5. 8 6 3 9.5 10.0 15. 7 19.6 26. 3 47.3 510 0. 2 0.2 0.5 1.4 2. 0 2.4 2. 6 3 6 3.9 5,9 6, 2 9.8 12.3 16.5 Z9. 6 538 0.1 0. 1 0.2 0.7 1. 1 1. 4 1. 5 2. 1 2. 3 3. 5 3. 7 5.8 7. 2 9. 6 17,3 第1.9组材料:WC6使用正火加回火的材料，使用温度不大于5930C, 表 2一5 标准压力级阀门压力一温度额定值 温度/ ℃ 公 称 压 力 16 25 40 63 100 160 320 20 50 67 110 150 260 420 760 分级表示的工作压力/MPa 一 29- 38 1. 6 2.0 2.5 4.1 5.2 6.5 7. 0 9. 6 10. 5 15. 8 16, 7 26.3 32.9 43. 9 79. 1 93 1.4 1.8 2. 3 4 O 5.2 6.5 7.0 9. 6 10. 5 15.8 16. 7 26. 3 32, 9 43, 9 79.1 149 1 3 1.C 2. 1 3-8 5_ 0 6, 3 6 8 9. 3 10. 1 15之 工6。1 2S.4 31.7 42，3 76.工 204 1.1 1. 4 1.9 3. 7 4. 9 6. 1 6. 5 8. 9 9.7 14. 6 15，弓 24 3 30,4 40, 6 73, 1 260 1.0 1. 2 1. 7 3. 5 4. 7 5, 8 6, 2 8.5 ，.3 14.0 14.8 23. 4 29. 2 38. 9 70.0 315 0.8 1.0 1. 5 3. 1 4. 2 5. 2 5. 6 7. 8 8t5 12.8 13. 5 21. 2 26, 7 .15.4 63.7 343 0.7 0. 9 1,4 3 0 4. 1 5. 1 5, 5 7,5 8，2 12. 4 13. 1 20. 7 25. 8 34. 5 62. 0 371 0. 6 0. 8 1. 3 2.9 4.0 5. 0 5. 3 ? 3 8，0 12.0 12.7 20. 0 24. 9 33. 2 59. 8 399 U.5 0.7 1.2 2.? 3.7 4. 7 5 0 6.{) 了.5 11.2 11.8 18.7 23. 3 31, 1 56，0 427 0 5 0.6 1. 1 2.6 3. 6 4. 4 产 7l“ 7. 1 10. 7 11. 3 17. 8 22. 2 29. 7 53. 5 454 0.3 0. 4 1.0 2.4 3.4 4.0 4.3 6. 2 6 8 10.210.8 17. 1 21. 3 28. 5 51.3 482 o. 3 0. 3 0. 7 2. 1 3. 1 3.9 4.i2 5.8 6. 3 9. 5 10.0 15.8 19. 7 26. 3 47. 3 GB/T 12224-2005 表2-5(续) 温度/ ℃ 公 称 压 力 16 25 40 63 100 160 320 20 50 67 110 150 260 420 760 分级表示的工作压力/MP. 510 0. 2 0. 2 0. 5 1. 5 2.2 2.8 3.0 4. 1 4. 5 6. 7 7. 1 11.2 14.0 18. 7 33. 6 538 0. 1 0.1 0.3 1. 0 1, 5 1.9 2.0 2，7 30 4,5 4.7 7.6